Zig Requires Chilkat v11.0.0+

Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // First generate an RSA private key.
    const rsa = try chilkat.Rsa.init();
    defer rsa.deinit();

    // Generate a random 2048-bit RSA key.
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    rsa.genKey(2048, priv_key) catch {
        std.debug.print("{s}\n", .{try rsa.getLastErrorText(alloc)});
        return;
    };

    // Create the CSR object and set properties.
    const csr = try chilkat.Csr.init();
    defer csr.deinit();

    csr.setCommonName("Admin forInformation-MainShop");

    // Country Name (2 letter code)
    csr.setCountry("SA");

    // Organization Name (eg, company)
    csr.setCompany("9999910000");

    // Organizational Unit Name (eg, secion/division)
    csr.setCompanyDivision("9999910000");

    // See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

    // csr.serial.number=1-XYZ|2-2.0|3-999695
    // 2.5.4.5 - id-at-serialNumber
    csr.setSubjectField("2.5.4.5", "1-XYZ|2-2.0|3-999695", "UTF8String") catch {};

    // csr.organization.identifier=990099994100099
    // 2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
    csr.setSubjectField("2.5.4.45", "1100", "UTF8String") catch {};

    // csr.invoice.type=1100
    // Don't know what this OID would be...
    csr.setSubjectField("2.5.4.99", "1100", "UTF8String") catch {};

    // csr.location.address=King Fahed Road
    // 2.5.4.9 - id-at-streetAddress
    csr.setSubjectField("2.5.4.9", "King Fahed Road", "UTF8String") catch {};

    // csr.industry.business.category=MainOffice
    // 2.5.4.15 - id-at-businessCategory
    csr.setSubjectField("2.5.4.15", "MainOffice", "UTF8String") catch {};

    // Create the CSR using the private key.
    const pem_str = csr.genCsrPem(alloc, priv_key) catch {
        std.debug.print("{s}\n", .{try csr.getLastErrorText(alloc)});
        return;
    };

    // Save the private key and CSR to a files.
    priv_key.savePkcs8EncryptedPemFile("password", "qa_output/privKey1.pem") catch {};

    const fac = try chilkat.FileAccess.init();
    defer fac.deinit();
    fac.writeEntireTextFile("qa_output/csr1.pem", pem_str, "utf-8", false) catch {};

    // Show the CSR.
    std.debug.print("{s}\n", .{pem_str});

    // Sample output:
    // The CSR PEM can be checked here:
    // https://www.networking4all.com/en/support/tools/csr+check/
    // Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

    //     -----BEGIN CERTIFICATE REQUEST-----
    //     MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
    // ...
    // ...
    //     hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
    //     -----END CERTIFICATE REQUEST-----
}